Power press



Oct 1.6, 1928 B. J. YANCHENKO POWER PRESS 2 Sheets-Sheet Filed Aug. 14, 1925 INVENTORv ,Basi! Jana/$221k!) AT ORNE Get. 16, 1928. 1,688,066

' B. J. YANCHENKO POWER PRES S Filed Aug. 14, 1925 2 Sheets-Sheet 2 INVENTOR #6 BarzF/Jzncmko IE! #4 1/? BY I I I P I I Patented Oct. 1928. V

UNITED STATES PATENT OFFICE.

' BASIL J'. YANCHENKO, OF NEW YORK, N. Y., ASSIGNORTO'IHE RROSPERI'IY COMPANY, INCL, OF SYRACUSE, NEW YORK, A CORPORATION OF NEW YORK.-

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Application filed August 14, 1925. Serial No. 50,173. i

y This invention apprtains to ironing/machines and more particularly to power presses closed by motor means and whichis safe to operate.

A further" purpose is to produce a power press of simple construction wherein I am enabled to use a continuously running motor capable of imparting intermittent pressure operations and to this end a freely swinging.

cam member travels over-a continuously runing drive roller for a predetermined period of time tomaintain compression between the L jaws on the work, and when the cam reaches the end of its travel and the compression period is completed the pressing jaws are then automatically opened, and I provide a novel structure and mode of operation for securing these results. i

Among other things, an important object of the invention is to employ a continuously running motor as aforesaid without resort ing to the use of a clutch which is ofttimes employed in power. presses to ac uire the necessary start and stop motion.

acquire the stop and start motion by an improved roller .and cam combination and in dolng so I take advantage of economy in power in employing a continuously running motor and eliminate the disadvang e ordinarily attending clutches and similar mechanisms. Thus by using a continuously running motor without a clutch, I greatly simplify power presses and ironers.

The accompanying drawing illustrates an. example of the invention serving to illustrate its principle and mode of operation and itis appreciated that changes may be made without departing from the principles involved.

- Figure lillustrates a side viewof thepress .in open'position with thev power cam m n operative position at the time it 1s about ready to start the press closing operatio n, by power. In this view thepress closed position of the cam'is shown in dotted lines.

5 F igure 2 illustrates a top view of the double safety hand control by which both hands 'of the operator are compelled to be used to close the press.

Figure 3 is a fragmentary rear view of the press while closed under pressure.

Figure 4 1s a cross sectional view of a rotating power closing;wheel which takes hold of the press closing mechanism to close the press jaws and which then release the mechanism to other means by which pressure is exerted for a prolonged duration. Figure 5 is a fragmentary side view of the press in'closed position.

. Referring further to the drawing forv a more detailed description of the invention there is shown a press frame 10 supporting a 20 serves not only to aid in balancing the press lever 14 and head jaw 12 or slightly overbalancing the head 12 to lift it but serves as well to slightly over-balance .the freelyswinging cam member so that its lower camway 22 is caused to normally stand forwardly toward the front of the press,

A roller end 24 is the extremity of a power shaft 24 j ournaled in a ear reduction housing 26 and the working ace 22 of theca'm 18 travels across the roller shaft end 24 in executing'the pressing operation. A motor 28 drives through gear reductions 23 and through a shaft 29 into the gear housing 26 and a worm pinion 30 is fixed to the shaft 29 on the inside of the housin withga worm wheel 31 fi-xe on the powerv haft24 thereby slowly driving the power 1 shaft.

peripheral speed, it follows that the cam face 27 dwells 0r prolongs its engagement with p the roller 24 for a'predetermined time therewhich meshes P i I The power driven shaft end 24 turns at rel atively slow speed by reason of the gear reby maintaining the period of compression on the work between the press jaws so long as it requires for the cam 22 to traverse the shaft roller end 24. l

- The cam frame 18 carries its cam face 22 in an offset relation so that the upper portion of the frame 18 stands to one side of the cam 22 and away from the roller. 24 with the result that the cam may traverse or swing laterally across or past the roller 24 from its lower rearmost position to its forward lowermost position. The offset roller-way passage 36 through the cam frame 18 shown in Figure 3 1 permits this movement from said rearwardly low swingingfposition to the forwardly low position and the weight 20 acts upon the cam frame 18. to urge it forwardly and hold it there because, as already explained, the said weight 20 over-balances the cam 22 causing it 20' to swing across the roller 24 without interpleted the pressure operation, opens by g1'av-' ity. A description of these features will now be given. a

A rotating disk, wheel or crank is fixed on the shaft 24, and the fact that the shaft 24 projects from the disk 40 a short distance affords the power shaft roller end 24 which 40 revolves under the cam 22 as already described. The disk 40 is adapted to close the press jaw 12 down on the work, but without pressure, by taking hold of the cam frame 18 and quickly lifting it upwardly to swing the press lever 14 on its fulcrum 15.

. The disk 40 carries a pin 41 normally urged outwardly by a spring 41 and projecting from the face; thereof which is adapted to engage and pickup a hook 42 formed integrally on the cam frame 18. Observing Figure 1 which shows the press open with the cam.

frame 18 down and observing that the rotating disk and pin 41 move in counter-clockwise direction, it is evident that the pin 41 would engage. the hook 42 at the time the pin 41 reaches its lowermost position provided that the hook 42 is 'at that moment lifted by the operator into alignment with said rotatingpin 41. However, Figure 1 shows the cam frame hook 42 outside of the path of travel of the pin 41,-and therefore the motor 28 continues to drive the disk 40, the pin 41, and the pressure roller 24 without in any way interfering with the normally open position of the press, and\ so the operator is free to adjust the work in between the aws.

Means are provided by which the operator initiates the power closing operation by manually lifting the cam, frame 18 just enough to permit the pin 41 to pick up the hook 42 to close the press, and such means embody safety apparatus by which the operator may not accidentally injure his hands between the press jaws. -A description of the operator controlled mechanism will nowbe given.

A control lever 44 is pivoted in the press frame at 45 and this lever is made with a lifting head 46reaching rearwardly and disposed under the edge of the cam 22. This lever 44 is also provided with a stop hook 47 against which the upper corner of the cam frame rests to'bring the cam frame 18 into normal-non-operative position and to hold it there against'the urge of the counter-balance weight-20. A link 48 is pivotally connected at 49 to the lever 44 and is pivotally connected at 50 to an arm 60 whichis fixed on a shaft 61 journaled in the frame 10. This shaft 61; v

carries loosely mounted thereon, referring to Figure 2, hubs v62 with integral handles 63 90. and 64 projecting therefrom. Each handle 63 and 64 is loosely mounted on the shaft 61 and rotates thereon without moving the shaft. The arm 60 is integrall formed with a hub 65 which is \also freely journaled to rotate on the shaft 61 without effecting movement of shaft 61. In other words, the shaft 61' merely supports the three hubs 62 and 65 journaled thereon. A lever 66 is pivotedat 67 on the hub 65, so this lever 66 is directly connected with the arm 60. Each outer end of the lever is slotted as at 68 and each slot embraces a pin 69 anchored in the two handle hubs 62.

The foregoing paragraph describes the safety handle structure shown in Figure 2 and by way of describing its operation, it is noted that any attempt to move the handle 64 alone, merely results in pivoting the lever 66 at its fulcrum 67 without moving the arm 60, and so it follows that the link 48 is not moved and the control lever 44 is not moved when the operator attempts to do so with one hand. However, if the operator will grasp the handles 63 and 64 with his two hands, respectivelyfit fol lows that the swing lever 66 enforizes movement of the hub 60 and therefore swings arm 60 rearwardly which transmits motion to the control lever 44 thereby disengaging stop hook 47 from cam frame 18 and simultaneously lifting the head 46 against the lower edge of the cam 22. This operation of both handles 63 and 64 causes the frame 18 to be lifted up a short distance thereby bringing the lift hook 42 into alignment with the traveling pin 41.

,As the pin 41 approaches lowermost position, it engages hook 42 and quickly carries the cam frame 18 upwardly thereby bringing thereafter produce compression by the motor the head 12 down upon the work but without When the upon the roller 24 and the cam frame 22 is caused to travel rearwardly under clockwise rotation of the power roller 24. The power roller 24 being comparatively small in diameter, has a low peripheral speed and the cam 22 therefore dwells for a certain pressing period as it slowly moves to the rear of the press. The front edge of the cam drops off of the roller at the end of the pressing operation, and the combined weight of the counter-weight 20 with the weight of the cam frame 18, causes the head 12 to be lifted. At the same time, the offset position of the cam frame 18 "permits this cam to again swing forwardly to non-operative press opened position as shown in Figure 1 and thereby come to rest against the stop hook 47 awaiting the next pressing operation.

The spring 41 permits the pin 40 toslide back into the crank wheel 40 each time it moves around into sliding engagement with the rear inclined surface of the hook 42 and thus passthe hook for it is noted that the pin 41 will make several revolutions about the shaft roller 24 before the cam'22 is fully trav ersed.

The pendulous cam frame 18 embodies a ing lifting hook 41 and the slowly rotating power pressure roller 24.

The press is safe to operate because it cannot be closed unless the operator uses both hands which compels him to remove his hands from the vicinity .of the closing jaws. A marked advantage exists in the continuously running motor, and a particular feature and advantage of this invention resides in the fact that I employ a continuously o erating motor to close the press under effort 0 the motor and without stopping and starting it.

What I claim is:

1. A press comprising in. combination, cooperating wide opening press jaws, a camconnected with one of the press jaws to produce jaw compression, means cooperating with the cam urging it to an inoperative position, a motor, a roller continuousl driven by the motor and adapted to engage t e cam, power closing means operated by the motor to close the press jaws, means to permit thecam to pass by the roller without being engaged by said roller, operator actuated means to cause the em to be brqught into position to be engaged by the power closing means .and subsequently engaged by the roller aforesaid to produce compression between the jaws. V

' 2. A press comprising in combination, cooperating wide opening press jaws, a cam connected with one of the press jaws to produce jaw compression, a weight means urging the cam to an inoperative position, a motor, a

roller continuously driven by the motor and adapted to engage the. cam, power closing means operated-by the motor, means to permit the cam to pass by the roller without engage 3. A press comprising in combination, co-

. ing said roller, and a manually actuated conoperating wide opening press jaws, a pressv lever carrying one press jaw and adapted to move this jaw relatively to the other, a cam pivotally suspended from the press lever, a motor driven roller continuously revolving and adapted to cooperate with the cam to drive it in one direction to produce jaw comression a assa eformed alon the cam enabling it to travel past the roller in the other direction to seek an inoperative position of rest, press closing means driven by the motor to lift the cam and close the press, and an operator actuated device to render effective the operation, of the press closing means.

4. A press comprising in combination, 00- operating wide opening press jaws, a press lever carrying one press jaw and adapted to operate said jaw relatively to the other jaw, acam swingably attached at one end thereof to the press lever, means cooperating with the cam urging it normally forwardly and upwardly, a continuously revolving power closing wheel including means adapted to take hold of the cam and lift it to close the press,

a continuously rotating motor driven roller,

adapted to cooperate with the swinging cam to produce jaw compression, and means forming partof the cam structure enabling it to pass *by the roller and return to normal inoperative position. v Y

5. A press comprising in combination, cooperating wide opening press jaws, a press lever carrying one press jaw'and adapted to open and close the press, a cam swingably pivoted at one end thereof to the press lever and adapted to impose pressure 'on the lever after the press closes, weight means coop-1 crating with the ca m acting through the pivot urging it normally upwardly and forwarclly to an inoperative position, amotor driven roller contlnuously revolving and adapted to engage the swinging cam and drive it in one direction to produce pressure as aforesaid, means forming part of the cam structure enabling it to pass by the roller with clearance without being engaged thereby while the cam is moving to its inoperative position, a power closing means bywhich the press is closed, and means operable by the operator to move the cam" into linewith swings to close the press, a motor driven press closing device, manually operable means to urgethe cam to a position to be engaged by the press closing device, and means acting on the cam and press lever causing the press to open after the cam traverses the roller and causing the cam to return to a normally inoperative position ready for the next pressing operation. j

7. A press comprising in combination, a frame, a press lever pivotally carried in the frame, jaws opened and closed by the lever, an elongated member having a cam surface at on end and being pivotally connected at the other end to the press lever, a motor, a roller driven by the motor and slowly revolving in engagement with the cam surface for a predetermined time to produce jaw compression through the lever, a weight carried y the lever and by the elongated member which causes the cam end of said member .determined pressing period, and power means operated by the motor to close the press. a v

8-. A press comprising in combination, .co

operating pressing aws, a press lever adapted .40

to open'wide and close the jaws, a pendulum member having a cam surface at one end and being pivotally connected at the other end to the press lever, a motor driven roller .slowly revolving in engagement with the cam surface to produce jaw compression through the lever, a weight. carried by the lever and by the pendulum member which causes said member to moveawa-y from the render eflective the power closing means.

9. A press comprising in combination, cooperating press jaws, a press lever to open and close the jaws, a pendulum cam pivotally connected to the press lever, motor means continuously operating, mechanism operated by the motor means to close the press without compression, a roller to run under the cam at the end .of the closing operation to produce compression, and a manually open able device .to lift the came into a position to be engaged by the press closing means.

In testimony whereof I aflix my signature.

\ BASIL J. YANCHENKO. 

